a(n) is the number of trivial braids on 3 strands with 2*n crossings.
A354602
a(n) is the number of trivial braids on 3 strands with 2*n crossings.
Terms
- a(0) =1a(1) =4a(2) =28a(3) =244a(4) =2412a(5) =25804a(6) =290932a(7) =3403404a(8) =40914508
External references
- oeis: A354602